When we judge the probability of an event based on how easily examples come to mind, it is referred to as the availability heuristic. This means that we rely on information that is readily available in our memory rather than considering all relevant information.
It is the tendency to search for, interpret, and favor information that confirms our preexisting beliefs or hypotheses.
Availability Cascade: This describes a self-reinforcing process where repeated exposure of certain ideas or opinions leads us to perceive them as more common or widely accepted than they actually are.